MSRA configuration
R&S
®
FSWP-B1
52
User Manual 1177.5862.02 ─ 09
Transformation Algorithm ← Advanced FFT mode / Basic settings
Defines the FFT calculation method.
"Single"
One FFT is calculated for the entire record length; if the
is larger than the record length, zeros are appended to the captured
data.
"Averaging"
Several overlapping FFTs are calculated for each record; the results
are combined to determine the final FFT result for the record. The
number of FFTs to be averaged is determined by the
Remote command:
FFT Length ← Advanced FFT mode / Basic settings
Defines the number of frequency points determined by each FFT calculation. The more
points are used, the higher the resolution in the spectrum becomes, but the longer the
calculation takes.
In advanced FFT mode, the number of sweep points is set to the FFT length automati-
cally.
Note:
If you use the arrow keys or the rotary knob to change the FFT length, the value
is incremented or decremented by powers of 2.
If you enter the value manually, any integer value from 3 to 524288 is available.
Remote command:
Window Function ← Advanced FFT mode / Basic settings
In the I/Q analyzer you can select one of several FFT window types.
The following window types are available:
●
Blackman-Harris
●
Flattop
●
Gauss
●
Rectangular
●
5-Term
Remote command:
Window Overlap ← Advanced FFT mode / Basic settings
Defines the part of a single FFT window that is re-calculated by the next FFT calcula-
tion when using multiple FFT windows.
Remote command:
Window Length ← Advanced FFT mode / Basic settings
Defines the number of samples to be included in a single FFT window in averaging
mode. (In single mode, the window length corresponds to the
Values from 3 to 4096 are available in "Manual" mode; in "Advanced" FFT mode, val-
ues from 3 to 524288 are available.
Data acquisition and bandwidth settings